Triangular combination square



DSC l5, 1931. LE ROY srovER TRIANGULAR `COMBIIA'I0N SQUARE Filed April 29, 1929 2 SheetS-Shee;

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Inventor 50]/ Cf fol/c1 015@ Attorney DCC. l5, 1931. L E RQY STOVER 1,836,407

TRIANGULAR COMBINATION SQUARE Y Filed April 29, 1929 2 Sheets-Sheet 2 Attorney l v zo which is strong,

Patented Dec. 1K5, 1931 UNITED STATES Ln noir` sfrovnn,V or mas MOINES, IOWA 'rnrANGULAn COMBINATION. sonnen Application filed April 29,

This invention relates to a triangular combination square and particularly to a measuring instrument adaptable to forming and setting window frames.

An Vobject of the invention is to provide a square of the character described that will give all the cuts in window frames of a standard quality, which will gauge the depths of y the jam, the bevel of the sill, the casing bevel,

locate the opening for the pulley, provide forty ve degree cuts for brick mold, a mullion scribe and all scribes in One-eighth of inches.

Another object of the invention is to provide a square of the character described which is adaptable for lsquaring and plumbing frames.

Further objects of the invention are to provide a square of the character referred to compact and simple, thoroughly reliable in its Operation, highly eflicient for its intended purpose, very simple in its method of assembly and comparatively inexpensive to manufacture and install. y

With the foregoing and'other objects in view, the invention consists in its novel combination, constructionV andl arrangement o parts as will be hereinafter more specifically described andillustrated in the accompany- 3o ing drawings', wherein is disclosed an embodiment of the inventiomzbut it is to be understood that changes', variations and modications `may. be resortedto without departing from the spirit of the claims hereunto appended.

In the drawings wherein like reference characters denote Vcorresponding parts throughoutthe several views; y

Figure 1 isa side elevation of the device in accordance with this invention,

Figure 2 is an end elevation thereof,

Figure 3 is a plan-view thereof,

. A Figure 4 is la fragmentary detailed sectional viewl taken ysubstantially on line 4 4 Vof Figure 1 and looking in the directions of the arrows, y

Figure 5 is a horizontal section taken through the vertical length substantially on line 5-5 ofFigure'l,

f thev base.

1929. serial No. 35ans?.

PATENT OFFICE Figure 6 is a fragmentarydetailed sectional elevation of one corner of the` device.`

Referring tothe drawings in detail, v10 indicates a base formed of wood or other workable material having one'en'd 11 cut to a forty-iive degree angle to conform with a hypotenuse of a right triangle. rllhe lower corner of the other end of the base is formed with a right angled notch 12, inset with respect to the ycorner thereof. l

The remaining portion of the other end has a plate 13 secured thereto having a pointed arm 14 depending into the right angled notch 12. i

Aslot 15 extends the entire length of the base l10 along the longitudinal medianof the upper face thereof. A right triangular frame indicated generally at 16 has the lower edge of the base 17 thereof seated in the slot 15 and secured by a plurality of pins 18. The pins 18 are removable so that the right triangular frame 16 may be removed from the base 10 in case it be necessary to repair the same.

Intermediate the ends of the base 10 a bubble tube 19 is mounted in plaster of Pariser i other like n iaterial in the'cavity 20 `formed in @lief bubble` tube terminates Vflush with the upper face of the base and the base is provided with oppositely disposed openings 21, 22 which register with the bubble tube 19 i so as to present a perspective for plumbing the gauge from both sides'of the base.

A guard plate 23 is secured in countersunk relation to theupper face of the base 10 so as to prevent the breaking of the bubble tube andV is ,provided with a cut out-portion 24 which registers with the cavity 20 and bub bletube-19 so as to present aperspective of the top face ofthe base 10. .i

AnV arcuate shaped cut out portion 25 is vertically disposed with respect to the cutout portion 24of the guard plate 23 so as the bubble tube 19 may be viewed from either side of the base of the triangular frame 17 d Adjacent the end 11, the base is `further formed with a square'cavity 26 which has a leaf spring 27 extending across the intermediate sidethereof and said cavityy 26" regis- In the area formed by the cavity 26, the slot 15 widens considerably so as to provide a space for rock-ably mounting the arm 28 which is pivoted as at 29 through the base and the base 17 of the right triangular frame 16.

A pin 30 rides in a groove 31 formed in the base 17 of the triangular frame for limiting the movement of the arm 28. The pin 30 provides a limit for supporting the abutment arm 28 at an angle to the base 10 when in open position and the spring 27 abutting the' curved end 32 of the arm resists movement of the arm when in vertical position while at the saine time secures the arm 28 in closed po- Y sition as will be clearly understood by reference to Figure 1 of the drawings.

The arm 28 is substantially U-shaped and overlaps the leg 17 of the frame so that there will be' an arm 28 on each side of the leg. The pin 30 extends between the arms 28 and to ride in the slot 31. Each of the arms 28 are provided with lateral extensions 33 which when in the open position form an abutment at an angle to the base 10 for a purpose, which will be later described. When the arms are in closed position the extensions 33 are seated flush in a pair of cavities 34 countersun'k in the upper face of the base 10.

`Adjacent the upper edge of the base 17 of the' right triangular frame there is formed a circular opening 35 extending through the walls thereof and longitudinally spaced from each other at half inch intervals.

The vertical lengt-h 36 of the triangular frame 16 is provided with a ldouble row of openings 37, 38 adjacent the outer edge of the leg and each opening 37 of the single row being spaced from each other the thickness of one-half inch. The distance between openings of adjacent rows however is one-eighth inch. The double rows ofvopenings 37, 38 extend from the upper face of the base 10 to the upper end of the Vertical leg 36. I The hypotenuse side 39 of the triangular frame merges of course with the base and vertical legs and terminates at the base 10 .whereupon the angular end 11 forms a continuous line therewith to the end of the base.

The right triangular frame 16 is formed of substantially thin metal such as aluminum or the like and to reinforce the hypotenuse side 39 and the vertical side 36, to prevent bending out of alinement, a horizontal strap 4() is secured to the inner edges of the vertical leg 36 and the hypotenuse side 39. A pair of openings 41, 42 are formed respectively inthe vertical leg 36 and the horizontal reinforcing bar 40 and a separate opening 43 and one of the openings 35 form the corners for describing an opening to be cut out of the window frame for inserting a standard two and one-half inch size pulley in the frame.

In the application of the device the right angled notch 12 forms a tlii'ee-eighth inch scribe. Drawing this scribe along the window end gives the correct thickness for setting all casings that have the offset effect.

The notch 12 also provides the threeeighth inch depth of gain in window jambs and the correct offset in the casing. By turning the square horizontal at the top of a door frame and standing the casing by its side a niark on the flushsurface of the notch gives a three-eighth inch on the easing cut.

The lower edge of the base 1() used in connection with the bubble glass 19 provides a level for truing the window frame or casing.

lllie edge of thevertical side 36 operated in conjunction with the bubble tube 19 provides a plumb-for truing the vertical j amb with respect to the window sill. The lower-edge of the base 10 in: conjunction with the outer edge of the vert-ical leg 36 of course provides a square and the edge of the vertical leg 36 and the edge of the hypotenuse side 39 forms an angle of forty-iive degrees whenever desired.

The openings 41, 42 and 43, and 35,'the latter being the open-ing designated at the twoand one-half inch mark in Figure 1 of the drawings provide the corner of a pulling gauge mark when the gauge is placedsquare at the top of a jamb and marked by-a pencil through the opening previously referredv t0' The marks indicated may be bored with a bit and sawed out whereby a perfect fit for a two-and one half inch standard size pulley is provided. The Y abutment arm 28 when open extends at the proper angle to the base to show a live-.eighth inch pitch to the four inches for picking standard sized window sills; The end of the sill is placed against the base with the pitched side towardthe abutment arm,which will show any variation in the standard pitch. y

By placing the square horizontal at the top of'a door jainb, a mark is made through the openingopposite the one inch block on the lower leg- 17 and aniaik made through the opening 35 on the four and one-half inch-block on the base 17 coordinated with a line drawn on the upper edge of the base 17 will give a correct pane for three and one-half inch butt hinges to be applied to a door or window.

Having thus described my invention, what I claim as new is:

1. A triangular square comprising a base of polygonal cross section, a right triangular frame vertically mounted in the base ineluding a vertical leg and. a horizontal leg, said base of greater cross section than said frame and having a right angular inset notchl at the lower corner of one end thereof, a plate secured on one end of thebase in ai plane flush with thev vertical leg of the frame and having a depending arm projecting inthe same plane therewith into said notch, a cross strap eX- tending in a horizontal plane, said cross strap, said vertical leg alid horizontal leg formed wzith cooperating openings describing. the corners of a polygon for the purpose of cutting the frame or window pulleys, an arm roolably mounted on said base and having an extension formed integral therewith at right angles to the base when in open position, said base formed with a transverse cavity for seating said extension wheny in closed position, a bubble tube mounted in said base and presenting a view from three faces thereof.

2. A triangular square comprising a base of polygonal Cross section, a right triangular frame vertically mounted in the base and including a vertical leg and a horizontal leg, said base of greater cross section than said frame and having a right angular inset notch at the lower corner of one end thereof, a plate secured on one end of the base in a plane flush with the vertical leg of the frame and having a depending arm projecting in the same plane therewith into said notch, a cross strap eX- tending in a horizontal plane, said cross strap, said vertical leg and horizontal leg formed with cooperating openings describing the corners of a polygon for the purpose of cutting the frame or window pulleys, an arm roclzably mounted on said base and having an extension formed integral therewith at right angles to the base when in open position, said base formed with a transverse cavity for seating said extension when in closed position, a bubble tube mounted in said base and presenting a view from three faces thereof, said vertical leg formed with a double row of openings having adj aoent spaced openings, said horizontal leg of said frame formed with openings horizontally spaced one-half inch apart. Y

In testimony whereof I aiiX my signature.

LE ROY STOVER.y 

